Fix base64 deserialization when JSON encoder escapes forward slashes (#1342)
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
This commit is contained in:
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GitHub
parent
74622d0c9c
commit
774a1dba35
6 changed files with 710 additions and 48 deletions
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@ -1,6 +1,7 @@
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using System.Buffers;
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using System.Buffers.Text;
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using System.Diagnostics;
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using System.Diagnostics.CodeAnalysis;
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using System.Runtime.InteropServices;
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using System.Text.Json.Serialization;
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@ -28,7 +29,7 @@ namespace ModelContextProtocol.Protocol;
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public sealed class BlobResourceContents : ResourceContents
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{
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private ReadOnlyMemory<byte>? _decodedData;
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private ReadOnlyMemory<byte> _blob;
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private ReadOnlyMemory<byte>? _blob;
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/// <summary>
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/// Creates an <see cref="BlobResourceContents"/> from raw data.
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@ -40,15 +41,20 @@ public sealed class BlobResourceContents : ResourceContents
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/// <exception cref="InvalidOperationException"></exception>
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public static BlobResourceContents FromBytes(ReadOnlyMemory<byte> bytes, string uri, string? mimeType = null)
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{
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ReadOnlyMemory<byte> blob = EncodingUtilities.EncodeToBase64Utf8(bytes);
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return new(bytes, uri, mimeType);
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}
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return new()
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/// <summary>Initializes a new instance of the <see cref="BlobResourceContents"/> class.</summary>
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public BlobResourceContents()
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{
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_decodedData = bytes,
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Blob = blob,
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MimeType = mimeType,
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Uri = uri
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};
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}
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[SetsRequiredMembers]
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private BlobResourceContents(ReadOnlyMemory<byte> decodedData, string uri, string? mimeType)
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{
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_decodedData = decodedData;
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Uri = uri;
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MimeType = mimeType;
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}
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/// <summary>
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@ -60,7 +66,16 @@ public sealed class BlobResourceContents : ResourceContents
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[JsonPropertyName("blob")]
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public required ReadOnlyMemory<byte> Blob
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{
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get => _blob;
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get
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{
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if (_blob is null)
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{
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Debug.Assert(_decodedData is not null);
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_blob = EncodingUtilities.EncodeToBase64Utf8(_decodedData!.Value);
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}
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return _blob.Value;
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}
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set
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{
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_blob = value;
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@ -92,6 +92,7 @@ public abstract class ContentBlock
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string? name = null;
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string? title = null;
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ReadOnlyMemory<byte>? data = null;
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ReadOnlyMemory<byte>? decodedData = null;
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string? mimeType = null;
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string? uri = null;
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string? description = null;
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@ -137,7 +138,14 @@ public abstract class ContentBlock
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break;
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case "data":
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if (!reader.ValueIsEscaped)
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{
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data = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan.ToArray();
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}
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else
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{
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decodedData = reader.GetBytesFromBase64();
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}
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break;
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case "mimeType":
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@ -230,13 +238,19 @@ public abstract class ContentBlock
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Text = text ?? throw new JsonException("Text contents must be provided for 'text' type."),
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},
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"image" => new ImageContentBlock
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"image" => decodedData is not null ?
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ImageContentBlock.FromBytes(decodedData.Value,
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mimeType ?? throw new JsonException("MIME type must be provided for 'image' type.")) :
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new ImageContentBlock
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{
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Data = data ?? throw new JsonException("Image data must be provided for 'image' type."),
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MimeType = mimeType ?? throw new JsonException("MIME type must be provided for 'image' type."),
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},
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"audio" => new AudioContentBlock
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"audio" => decodedData is not null ?
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AudioContentBlock.FromBytes(decodedData.Value,
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mimeType ?? throw new JsonException("MIME type must be provided for 'audio' type.")) :
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new AudioContentBlock
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{
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Data = data ?? throw new JsonException("Audio data must be provided for 'audio' type."),
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MimeType = mimeType ?? throw new JsonException("MIME type must be provided for 'audio' type."),
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@ -414,7 +428,7 @@ public sealed class TextContentBlock : ContentBlock
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public sealed class ImageContentBlock : ContentBlock
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{
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private ReadOnlyMemory<byte>? _decodedData;
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private ReadOnlyMemory<byte> _data;
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private ReadOnlyMemory<byte>? _data;
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/// <summary>
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/// Creates an <see cref="ImageContentBlock"/> from decoded image bytes.
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@ -423,7 +437,7 @@ public sealed class ImageContentBlock : ContentBlock
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/// <param name="mimeType">The MIME type of the image.</param>
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/// <returns>A new <see cref="ImageContentBlock"/> instance.</returns>
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/// <remarks>
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/// This method stores the provided bytes as <see cref="DecodedData"/> and encodes them to base64 UTF-8 bytes for <see cref="Data"/>.
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/// This method stores the provided bytes as <see cref="DecodedData"/> and lazily encodes them to base64 UTF-8 bytes for <see cref="Data"/>.
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/// </remarks>
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/// <exception cref="ArgumentNullException"><paramref name="mimeType"/> is <see langword="null"/>.</exception>
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/// <exception cref="ArgumentException"><paramref name="mimeType"/> is empty or composed entirely of whitespace.</exception>
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@ -431,14 +445,19 @@ public sealed class ImageContentBlock : ContentBlock
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{
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Throw.IfNullOrWhiteSpace(mimeType);
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ReadOnlyMemory<byte> data = EncodingUtilities.EncodeToBase64Utf8(bytes);
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return new(bytes, mimeType);
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}
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return new()
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/// <summary>Initializes a new instance of the <see cref="ImageContentBlock"/> class.</summary>
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public ImageContentBlock()
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{
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_decodedData = bytes,
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Data = data,
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MimeType = mimeType
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};
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}
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[SetsRequiredMembers]
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private ImageContentBlock(ReadOnlyMemory<byte> decodedData, string mimeType)
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{
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_decodedData = decodedData;
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MimeType = mimeType;
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}
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/// <inheritdoc/>
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@ -453,7 +472,16 @@ public sealed class ImageContentBlock : ContentBlock
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[JsonPropertyName("data")]
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public required ReadOnlyMemory<byte> Data
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{
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get => _data;
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get
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{
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if (_data is null)
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{
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Debug.Assert(_decodedData is not null);
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_data = EncodingUtilities.EncodeToBase64Utf8(_decodedData!.Value);
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}
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return _data.Value;
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}
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set
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{
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_data = value;
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@ -494,7 +522,14 @@ public sealed class ImageContentBlock : ContentBlock
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public required string MimeType { get; set; }
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[DebuggerBrowsable(DebuggerBrowsableState.Never)]
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private string DebuggerDisplay => $"MimeType = {MimeType}, Length = {DebuggerDisplayHelper.GetBase64LengthDisplay(Data)}";
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private string DebuggerDisplay
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{
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get
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{
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string lengthDisplay = _decodedData is not null ? $"{_decodedData.Value.Length} bytes" : DebuggerDisplayHelper.GetBase64LengthDisplay(Data);
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return $"MimeType = {MimeType}, Length = {lengthDisplay}";
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}
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}
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}
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/// <summary>Represents audio provided to or from an LLM.</summary>
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@ -502,7 +537,7 @@ public sealed class ImageContentBlock : ContentBlock
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public sealed class AudioContentBlock : ContentBlock
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{
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private ReadOnlyMemory<byte>? _decodedData;
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private ReadOnlyMemory<byte> _data;
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private ReadOnlyMemory<byte>? _data;
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/// <summary>
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/// Creates an <see cref="AudioContentBlock"/> from decoded audio bytes.
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@ -511,7 +546,7 @@ public sealed class AudioContentBlock : ContentBlock
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/// <param name="mimeType">The MIME type of the audio.</param>
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/// <returns>A new <see cref="AudioContentBlock"/> instance.</returns>
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/// <remarks>
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/// This method stores the provided bytes as <see cref="DecodedData"/> and encodes them to base64 UTF-8 bytes for <see cref="Data"/>.
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/// This method stores the provided bytes as <see cref="DecodedData"/> and lazily encodes them to base64 UTF-8 bytes for <see cref="Data"/>.
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/// </remarks>
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/// <exception cref="ArgumentNullException"><paramref name="mimeType"/> is <see langword="null"/>.</exception>
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/// <exception cref="ArgumentException"><paramref name="mimeType"/> is empty or composed entirely of whitespace.</exception>
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@ -519,14 +554,19 @@ public sealed class AudioContentBlock : ContentBlock
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{
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Throw.IfNullOrWhiteSpace(mimeType);
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ReadOnlyMemory<byte> data = EncodingUtilities.EncodeToBase64Utf8(bytes);
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return new(bytes, mimeType);
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}
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return new()
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/// <summary>Initializes a new instance of the <see cref="AudioContentBlock"/> class.</summary>
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public AudioContentBlock()
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{
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_decodedData = bytes,
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Data = data,
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MimeType = mimeType
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};
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}
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[SetsRequiredMembers]
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private AudioContentBlock(ReadOnlyMemory<byte> decodedData, string mimeType)
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{
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_decodedData = decodedData;
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MimeType = mimeType;
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}
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/// <inheritdoc/>
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@ -541,7 +581,16 @@ public sealed class AudioContentBlock : ContentBlock
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[JsonPropertyName("data")]
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public required ReadOnlyMemory<byte> Data
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{
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get => _data;
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get
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{
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if (_data is null)
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{
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Debug.Assert(_decodedData is not null);
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_data = EncodingUtilities.EncodeToBase64Utf8(_decodedData!.Value);
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}
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return _data.Value;
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}
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set
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{
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_data = value;
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@ -582,7 +631,14 @@ public sealed class AudioContentBlock : ContentBlock
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public required string MimeType { get; set; }
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[DebuggerBrowsable(DebuggerBrowsableState.Never)]
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private string DebuggerDisplay => $"MimeType = {MimeType}, Length = {DebuggerDisplayHelper.GetBase64LengthDisplay(Data)}";
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private string DebuggerDisplay
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{
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get
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{
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string lengthDisplay = _decodedData is not null ? $"{_decodedData.Value.Length} bytes" : DebuggerDisplayHelper.GetBase64LengthDisplay(Data);
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return $"MimeType = {MimeType}, Length = {lengthDisplay}";
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}
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}
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}
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/// <summary>Represents the contents of a resource, embedded into a prompt or tool call result.</summary>
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@ -80,6 +80,7 @@ public abstract class ResourceContents
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string? uri = null;
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string? mimeType = null;
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ReadOnlyMemory<byte>? blob = null;
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ReadOnlyMemory<byte>? decodedBlob = null;
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string? text = null;
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JsonObject? meta = null;
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@ -105,7 +106,14 @@ public abstract class ResourceContents
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break;
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case "blob":
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if (!reader.ValueIsEscaped)
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{
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blob = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan.ToArray();
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}
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else
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{
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decodedBlob = reader.GetBytesFromBase64();
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}
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break;
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case "text":
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@ -122,6 +130,13 @@ public abstract class ResourceContents
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}
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}
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if (decodedBlob is not null)
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{
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var blobResource = BlobResourceContents.FromBytes(decodedBlob.Value, uri ?? string.Empty, mimeType);
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blobResource.Meta = meta;
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return blobResource;
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}
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if (blob is not null)
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{
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return new BlobResourceContents
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@ -1,5 +1,6 @@
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using Microsoft.Extensions.AI;
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using ModelContextProtocol.Protocol;
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using ModelContextProtocol.Tests.Protocol;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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@ -402,6 +403,183 @@ public class AIContentExtensionsTests
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Assert.Null(exception);
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void ImageContentBlock_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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var image = ImageContentBlock.FromBytes(originalBytes, "image/png");
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var aiContent = Assert.IsType<DataContent>(image.ToAIContent());
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Assert.Equal("image/png", aiContent.MediaType);
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<ImageContentBlock>(aiContent.ToContentBlock());
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Assert.Equal("image/png", roundTripped.MimeType);
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Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void ImageContentBlock_DataSetter_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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string base64 = Convert.ToBase64String(originalBytes);
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var image = new ImageContentBlock
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{
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Data = System.Text.Encoding.UTF8.GetBytes(base64),
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MimeType = "image/jpeg"
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};
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var aiContent = Assert.IsType<DataContent>(image.ToAIContent());
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Assert.Equal("image/jpeg", aiContent.MediaType);
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<ImageContentBlock>(aiContent.ToContentBlock());
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Assert.Equal("image/jpeg", roundTripped.MimeType);
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Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void AudioContentBlock_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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var audio = AudioContentBlock.FromBytes(originalBytes, "audio/wav");
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var aiContent = Assert.IsType<DataContent>(audio.ToAIContent());
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Assert.Equal("audio/wav", aiContent.MediaType);
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<AudioContentBlock>(aiContent.ToContentBlock());
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Assert.Equal("audio/wav", roundTripped.MimeType);
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Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void AudioContentBlock_DataSetter_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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string base64 = Convert.ToBase64String(originalBytes);
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var audio = new AudioContentBlock
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{
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Data = System.Text.Encoding.UTF8.GetBytes(base64),
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MimeType = "audio/mp3"
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};
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var aiContent = Assert.IsType<DataContent>(audio.ToAIContent());
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Assert.Equal("audio/mp3", aiContent.MediaType);
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<AudioContentBlock>(aiContent.ToContentBlock());
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Assert.Equal("audio/mp3", roundTripped.MimeType);
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Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void BlobResourceContents_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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var blob = BlobResourceContents.FromBytes(originalBytes, "file:///test.bin", "application/octet-stream");
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var embedded = new EmbeddedResourceBlock { Resource = blob };
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var aiContent = Assert.IsType<DataContent>(embedded.ToAIContent());
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Assert.Equal("application/octet-stream", aiContent.MediaType);
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<EmbeddedResourceBlock>(aiContent.ToContentBlock());
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var roundTrippedBlob = Assert.IsType<BlobResourceContents>(roundTripped.Resource);
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Assert.Equal("application/octet-stream", roundTrippedBlob.MimeType);
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Assert.Equal(originalBytes, roundTrippedBlob.DecodedData.ToArray());
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void BlobResourceContents_BlobSetter_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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string base64 = Convert.ToBase64String(originalBytes);
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var blob = new BlobResourceContents
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{
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Blob = System.Text.Encoding.UTF8.GetBytes(base64),
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Uri = "file:///test.bin",
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MimeType = "application/octet-stream"
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};
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var embedded = new EmbeddedResourceBlock { Resource = blob };
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var aiContent = Assert.IsType<DataContent>(embedded.ToAIContent());
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Assert.Equal("application/octet-stream", aiContent.MediaType);
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<EmbeddedResourceBlock>(aiContent.ToContentBlock());
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var roundTrippedBlob = Assert.IsType<BlobResourceContents>(roundTripped.Resource);
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Assert.Equal("application/octet-stream", roundTrippedBlob.MimeType);
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Assert.Equal(originalBytes, roundTrippedBlob.DecodedData.ToArray());
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}
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[Theory]
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[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
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public void ImageContentBlock_JsonDeserialized_ToAIContent_RoundTrips(byte[] originalBytes)
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{
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string base64 = Convert.ToBase64String(originalBytes);
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string json = $$"""{"type":"image","data":"{{base64}}","mimeType":"image/png"}""";
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var image = Assert.IsType<ImageContentBlock>(
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JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
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var aiContent = Assert.IsType<DataContent>(image.ToAIContent());
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Assert.Equal(originalBytes, aiContent.Data.ToArray());
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var roundTripped = Assert.IsType<ImageContentBlock>(aiContent.ToContentBlock());
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Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
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}
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[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public void ImageContentBlock_EscapedJsonDeserialized_ToAIContent_RoundTrips(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
string json = $$"""{"type":"image","data":"{{base64.Replace("/", "\\/")}}","mimeType":"image/png"}""";
|
||||
|
||||
var image = Assert.IsType<ImageContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
var aiContent = Assert.IsType<DataContent>(image.ToAIContent());
|
||||
Assert.Equal(originalBytes, aiContent.Data.ToArray());
|
||||
|
||||
var roundTripped = Assert.IsType<ImageContentBlock>(aiContent.ToContentBlock());
|
||||
Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public void AudioContentBlock_EscapedJsonDeserialized_ToAIContent_RoundTrips(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
string json = $$"""{"type":"audio","data":"{{base64.Replace("/", "\\/")}}","mimeType":"audio/wav"}""";
|
||||
|
||||
var audio = Assert.IsType<AudioContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
var aiContent = Assert.IsType<DataContent>(audio.ToAIContent());
|
||||
Assert.Equal(originalBytes, aiContent.Data.ToArray());
|
||||
|
||||
var roundTripped = Assert.IsType<AudioContentBlock>(aiContent.ToContentBlock());
|
||||
Assert.Equal(originalBytes, roundTripped.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public void BlobResourceContents_EscapedJsonDeserialized_ToAIContent_RoundTrips(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
string json = $$"""{"uri":"file:///test.bin","blob":"{{base64.Replace("/", "\\/")}}","mimeType":"application/octet-stream"}""";
|
||||
|
||||
var blob = Assert.IsType<BlobResourceContents>(
|
||||
JsonSerializer.Deserialize<ResourceContents>(json, McpJsonUtilities.DefaultOptions));
|
||||
var embedded = new EmbeddedResourceBlock { Resource = blob };
|
||||
|
||||
var aiContent = Assert.IsType<DataContent>(embedded.ToAIContent());
|
||||
Assert.Equal(originalBytes, aiContent.Data.ToArray());
|
||||
|
||||
var roundTripped = Assert.IsType<EmbeddedResourceBlock>(aiContent.ToContentBlock());
|
||||
var roundTrippedBlob = Assert.IsType<BlobResourceContents>(roundTripped.Resource);
|
||||
Assert.Equal(originalBytes, roundTrippedBlob.DecodedData.ToArray());
|
||||
}
|
||||
}
|
||||
|
||||
// Test type for named user-defined type test
|
||||
|
|
|
|||
|
|
@ -1,4 +1,5 @@
|
|||
using ModelContextProtocol.Protocol;
|
||||
using System.Text;
|
||||
using System.Text.Json;
|
||||
|
||||
namespace ModelContextProtocol.Tests.Protocol;
|
||||
|
|
@ -290,4 +291,275 @@ public class ContentBlockTests
|
|||
{
|
||||
Assert.ThrowsAny<ArgumentException>(() => AudioContentBlock.FromBytes((byte[])[1, 2, 3], mimeType!));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void ImageContentBlock_Deserialization_HandlesEscapedForwardSlashInBase64()
|
||||
{
|
||||
// Base64 uses '/' which some JSON encoders escape as '\/' (valid JSON).
|
||||
// The converter must unescape before storing the base64 UTF-8 bytes.
|
||||
byte[] originalBytes = [0xFF, 0xD8, 0xFF, 0xE0]; // sample bytes that produce '/' in base64
|
||||
string base64 = Convert.ToBase64String(originalBytes); // "/9j/4A=="
|
||||
Assert.Contains("/", base64);
|
||||
|
||||
// Simulate a JSON encoder that escapes '/' as '\/'
|
||||
string json = $$"""{"type":"image","data":"{{base64.Replace("/", "\\/")}}","mimeType":"image/jpeg"}""";
|
||||
|
||||
var deserialized = JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions);
|
||||
var image = Assert.IsType<ImageContentBlock>(deserialized);
|
||||
Assert.Equal(base64, System.Text.Encoding.UTF8.GetString(image.Data.ToArray()));
|
||||
Assert.Equal(originalBytes, image.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void AudioContentBlock_Deserialization_HandlesEscapedForwardSlashInBase64()
|
||||
{
|
||||
byte[] originalBytes = [0xFF, 0xD8, 0xFF, 0xE0];
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
Assert.Contains("/", base64);
|
||||
|
||||
string json = $$"""{"type":"audio","data":"{{base64.Replace("/", "\\/")}}","mimeType":"audio/wav"}""";
|
||||
|
||||
var deserialized = JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions);
|
||||
var audio = Assert.IsType<AudioContentBlock>(deserialized);
|
||||
Assert.Equal(base64, System.Text.Encoding.UTF8.GetString(audio.Data.ToArray()));
|
||||
Assert.Equal(originalBytes, audio.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Provides test data for base64 roundtrip tests. Each entry is a byte array that exercises
|
||||
/// different base64 encoding characteristics:
|
||||
/// - Various lengths producing 0, 1, or 2 padding characters
|
||||
/// - Bytes that produce all 64 base64 alphabet characters including '+' and '/'
|
||||
/// </summary>
|
||||
public static TheoryData<byte[]> Base64TestData()
|
||||
{
|
||||
var data = new TheoryData<byte[]>
|
||||
{
|
||||
Array.Empty<byte>(), // empty: ""
|
||||
new byte[] { 0x00 }, // 1 byte, 2 padding chars: "AA=="
|
||||
new byte[] { 0x00, 0x01 }, // 2 bytes, 1 padding char: "AAE="
|
||||
new byte[] { 0x00, 0x01, 0x02 }, // 3 bytes, no padding: "AAEC"
|
||||
new byte[] { 0xFF, 0xD8, 0xFF, 0xE0 }, // produces '/' in base64: "/9j/4A=="
|
||||
new byte[] { 0xFB, 0xEF, 0xBE }, // produces '+' in base64: "++++"
|
||||
};
|
||||
|
||||
// All 256 byte values to exercise the full base64 alphabet
|
||||
byte[] allBytes = new byte[256];
|
||||
for (int i = 0; i < 256; i++)
|
||||
{
|
||||
allBytes[i] = (byte)i;
|
||||
}
|
||||
data.Add(allBytes);
|
||||
|
||||
// Larger payload (1024 bytes)
|
||||
byte[] largePayload = new byte[1024];
|
||||
new Random(42).NextBytes(largePayload);
|
||||
data.Add(largePayload);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void ImageContentBlock_FromBytes_RoundtripsCorrectly(byte[] originalBytes)
|
||||
{
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
var image = ImageContentBlock.FromBytes(originalBytes, "image/png");
|
||||
|
||||
Assert.Equal("image/png", image.MimeType);
|
||||
Assert.Equal(originalBytes, image.DecodedData.ToArray());
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(image.Data.ToArray()));
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void ImageContentBlock_DataSetter_RoundtripsCorrectly(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
byte[] base64Utf8 = Encoding.UTF8.GetBytes(base64);
|
||||
|
||||
var image = new ImageContentBlock { Data = base64Utf8, MimeType = "image/png" };
|
||||
|
||||
Assert.Equal(base64Utf8, image.Data.ToArray());
|
||||
Assert.Equal(originalBytes, image.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void ImageContentBlock_JsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
byte[] base64Utf8 = Encoding.UTF8.GetBytes(base64);
|
||||
|
||||
var original = new ImageContentBlock { Data = base64Utf8, MimeType = "image/png" };
|
||||
string json = JsonSerializer.Serialize<ContentBlock>(original, McpJsonUtilities.DefaultOptions);
|
||||
var deserialized = Assert.IsType<ImageContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(base64Utf8, deserialized.Data.ToArray());
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void ImageContentBlock_FromBytes_JsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
var original = ImageContentBlock.FromBytes(originalBytes, "image/jpeg");
|
||||
string json = JsonSerializer.Serialize<ContentBlock>(original, McpJsonUtilities.DefaultOptions);
|
||||
var deserialized = Assert.IsType<ImageContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(deserialized.Data.ToArray()));
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void ImageContentBlock_EscapedJsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
// Simulate JSON encoder that escapes '/' as '\/'
|
||||
string json = $$"""{"type":"image","data":"{{base64.Replace("/", "\\/")}}","mimeType":"image/png"}""";
|
||||
|
||||
var deserialized = Assert.IsType<ImageContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(base64, Encoding.UTF8.GetString(deserialized.Data.ToArray()));
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void ImageContentBlock_DataSetterInvalidatesCachedDecodedData()
|
||||
{
|
||||
byte[] bytes1 = [1, 2, 3];
|
||||
var image = ImageContentBlock.FromBytes(bytes1, "image/png");
|
||||
|
||||
// Access DecodedData to populate cache
|
||||
Assert.Equal(bytes1, image.DecodedData.ToArray());
|
||||
|
||||
// Set new Data to invalidate cache
|
||||
byte[] newBytes = [4, 5, 6];
|
||||
string newBase64 = Convert.ToBase64String(newBytes);
|
||||
image.Data = Encoding.UTF8.GetBytes(newBase64);
|
||||
|
||||
Assert.Equal(newBytes, image.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void AudioContentBlock_FromBytes_RoundtripsCorrectly(byte[] originalBytes)
|
||||
{
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
var audio = AudioContentBlock.FromBytes(originalBytes, "audio/wav");
|
||||
|
||||
Assert.Equal("audio/wav", audio.MimeType);
|
||||
Assert.Equal(originalBytes, audio.DecodedData.ToArray());
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(audio.Data.ToArray()));
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void AudioContentBlock_DataSetter_RoundtripsCorrectly(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
byte[] base64Utf8 = Encoding.UTF8.GetBytes(base64);
|
||||
|
||||
var audio = new AudioContentBlock { Data = base64Utf8, MimeType = "audio/wav" };
|
||||
|
||||
Assert.Equal(base64Utf8, audio.Data.ToArray());
|
||||
Assert.Equal(originalBytes, audio.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void AudioContentBlock_JsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
byte[] base64Utf8 = Encoding.UTF8.GetBytes(base64);
|
||||
|
||||
var original = new AudioContentBlock { Data = base64Utf8, MimeType = "audio/wav" };
|
||||
string json = JsonSerializer.Serialize<ContentBlock>(original, McpJsonUtilities.DefaultOptions);
|
||||
var deserialized = Assert.IsType<AudioContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(base64Utf8, deserialized.Data.ToArray());
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void AudioContentBlock_FromBytes_JsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
var original = AudioContentBlock.FromBytes(originalBytes, "audio/mp3");
|
||||
string json = JsonSerializer.Serialize<ContentBlock>(original, McpJsonUtilities.DefaultOptions);
|
||||
var deserialized = Assert.IsType<AudioContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(deserialized.Data.ToArray()));
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void AudioContentBlock_EscapedJsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
string json = $$"""{"type":"audio","data":"{{base64.Replace("/", "\\/")}}","mimeType":"audio/wav"}""";
|
||||
|
||||
var deserialized = Assert.IsType<AudioContentBlock>(
|
||||
JsonSerializer.Deserialize<ContentBlock>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(base64, Encoding.UTF8.GetString(deserialized.Data.ToArray()));
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void AudioContentBlock_DataSetterInvalidatesCachedDecodedData()
|
||||
{
|
||||
byte[] bytes1 = [1, 2, 3];
|
||||
var audio = AudioContentBlock.FromBytes(bytes1, "audio/wav");
|
||||
|
||||
Assert.Equal(bytes1, audio.DecodedData.ToArray());
|
||||
|
||||
byte[] newBytes = [4, 5, 6];
|
||||
string newBase64 = Convert.ToBase64String(newBytes);
|
||||
audio.Data = Encoding.UTF8.GetBytes(newBase64);
|
||||
|
||||
Assert.Equal(newBytes, audio.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void ImageContentBlock_FromBytes_LazilyEncodesData(byte[] originalBytes)
|
||||
{
|
||||
// FromBytes should only decode when Data is accessed
|
||||
var image = ImageContentBlock.FromBytes(originalBytes, "image/png");
|
||||
|
||||
// First, access DecodedData without touching Data
|
||||
Assert.Equal(originalBytes, image.DecodedData.ToArray());
|
||||
|
||||
// Now access Data and verify it lazily encoded correctly
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(image.Data.ToArray()));
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(Base64TestData))]
|
||||
public void AudioContentBlock_FromBytes_LazilyEncodesData(byte[] originalBytes)
|
||||
{
|
||||
var audio = AudioContentBlock.FromBytes(originalBytes, "audio/wav");
|
||||
|
||||
Assert.Equal(originalBytes, audio.DecodedData.ToArray());
|
||||
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(audio.Data.ToArray()));
|
||||
}
|
||||
}
|
||||
|
|
@ -1,4 +1,5 @@
|
|||
using ModelContextProtocol.Protocol;
|
||||
using System.Text;
|
||||
using System.Text.Json;
|
||||
|
||||
namespace ModelContextProtocol.Tests.Protocol;
|
||||
|
|
@ -489,4 +490,129 @@ public static class ResourceContentsTests
|
|||
|
||||
Assert.DoesNotContain("mimeType", json);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public static void BlobResourceContents_Deserialization_HandlesEscapedForwardSlashInBase64()
|
||||
{
|
||||
// Base64 uses '/' which some JSON encoders escape as '\/' (valid JSON).
|
||||
// The converter must unescape before storing the base64 UTF-8 bytes.
|
||||
byte[] originalBytes = [0xFF, 0xD8, 0xFF, 0xE0]; // sample bytes that produce '/' in base64
|
||||
string base64 = Convert.ToBase64String(originalBytes); // "/9j/4A=="
|
||||
Assert.Contains("/", base64);
|
||||
|
||||
// Simulate a JSON encoder that escapes '/' as '\/'
|
||||
string json = $$"""{"uri":"file:///test.bin","blob":"{{base64.Replace("/", "\\/")}}","mimeType":"application/octet-stream"}""";
|
||||
|
||||
var deserialized = JsonSerializer.Deserialize<ResourceContents>(json, McpJsonUtilities.DefaultOptions);
|
||||
var blob = Assert.IsType<BlobResourceContents>(deserialized);
|
||||
Assert.Equal(base64, System.Text.Encoding.UTF8.GetString(blob.Blob.ToArray()));
|
||||
Assert.Equal(originalBytes, blob.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public static void BlobResourceContents_FromBytes_RoundtripsCorrectly(byte[] originalBytes)
|
||||
{
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
var blob = BlobResourceContents.FromBytes(originalBytes, "file:///test.bin", "application/octet-stream");
|
||||
|
||||
Assert.Equal("file:///test.bin", blob.Uri);
|
||||
Assert.Equal("application/octet-stream", blob.MimeType);
|
||||
Assert.Equal(originalBytes, blob.DecodedData.ToArray());
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(blob.Blob.ToArray()));
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public static void BlobResourceContents_BlobSetter_RoundtripsCorrectly(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
byte[] base64Utf8 = Encoding.UTF8.GetBytes(base64);
|
||||
|
||||
var blob = new BlobResourceContents { Blob = base64Utf8, Uri = "file:///test.bin" };
|
||||
|
||||
Assert.Equal(base64Utf8, blob.Blob.ToArray());
|
||||
Assert.Equal(originalBytes, blob.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public static void BlobResourceContents_JsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
byte[] base64Utf8 = Encoding.UTF8.GetBytes(base64);
|
||||
|
||||
var original = new BlobResourceContents
|
||||
{
|
||||
Blob = base64Utf8,
|
||||
Uri = "file:///test.bin",
|
||||
MimeType = "application/octet-stream"
|
||||
};
|
||||
string json = JsonSerializer.Serialize<ResourceContents>(original, McpJsonUtilities.DefaultOptions);
|
||||
var deserialized = Assert.IsType<BlobResourceContents>(
|
||||
JsonSerializer.Deserialize<ResourceContents>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(base64Utf8, deserialized.Blob.ToArray());
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public static void BlobResourceContents_FromBytes_JsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
var original = BlobResourceContents.FromBytes(originalBytes, "file:///test.bin", "application/octet-stream");
|
||||
string json = JsonSerializer.Serialize<ResourceContents>(original, McpJsonUtilities.DefaultOptions);
|
||||
var deserialized = Assert.IsType<BlobResourceContents>(
|
||||
JsonSerializer.Deserialize<ResourceContents>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(deserialized.Blob.ToArray()));
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public static void BlobResourceContents_EscapedJsonRoundtrip_PreservesData(byte[] originalBytes)
|
||||
{
|
||||
string base64 = Convert.ToBase64String(originalBytes);
|
||||
|
||||
string json = $$"""{"uri":"file:///test.bin","blob":"{{base64.Replace("/", "\\/")}}","mimeType":"application/octet-stream"}""";
|
||||
|
||||
var deserialized = Assert.IsType<BlobResourceContents>(
|
||||
JsonSerializer.Deserialize<ResourceContents>(json, McpJsonUtilities.DefaultOptions));
|
||||
|
||||
Assert.Equal(base64, Encoding.UTF8.GetString(deserialized.Blob.ToArray()));
|
||||
Assert.Equal(originalBytes, deserialized.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public static void BlobResourceContents_BlobSetterInvalidatesCachedDecodedData()
|
||||
{
|
||||
byte[] bytes1 = [1, 2, 3];
|
||||
var blob = BlobResourceContents.FromBytes(bytes1, "file:///test.bin");
|
||||
|
||||
Assert.Equal(bytes1, blob.DecodedData.ToArray());
|
||||
|
||||
byte[] newBytes = [4, 5, 6];
|
||||
string newBase64 = Convert.ToBase64String(newBytes);
|
||||
blob.Blob = Encoding.UTF8.GetBytes(newBase64);
|
||||
|
||||
Assert.Equal(newBytes, blob.DecodedData.ToArray());
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[MemberData(nameof(ContentBlockTests.Base64TestData), MemberType = typeof(ContentBlockTests))]
|
||||
public static void BlobResourceContents_FromBytes_LazilyEncodesBlob(byte[] originalBytes)
|
||||
{
|
||||
var blob = BlobResourceContents.FromBytes(originalBytes, "file:///test.bin");
|
||||
|
||||
// Access DecodedData first without touching Blob
|
||||
Assert.Equal(originalBytes, blob.DecodedData.ToArray());
|
||||
|
||||
// Now access Blob and verify lazy encoding
|
||||
string expectedBase64 = Convert.ToBase64String(originalBytes);
|
||||
Assert.Equal(expectedBase64, Encoding.UTF8.GetString(blob.Blob.ToArray()));
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue